CN218013949U - Spiral rotating mechanism and garbage impurity removal and separation device - Google Patents

Abstract

The utility model provides a spiral slewing mechanism and rubbish edulcoration separator relates to refuse handling installation technical field, and its spiral slewing mechanism is used for setting up in screening mechanism, including pivot and helical blade, the pivot is used for running through the sieve section of thick bamboo of screening mechanism along the axial, and helical blade sets up in the pivot and lies in a sieve section of thick bamboo along the axial, and helical blade includes blade body and wear-resisting structure, and the blade body is connected with the pivot, and wear-resisting structure sets up the one end of keeping away from the pivot at the blade body to be used for separating the impurity that bonds on a sieve section of thick bamboo inner wall. The utility model provides a wear-resisting structure can scrape the mill to the impurity that bonds on a sieve section of thick bamboo inner wall, prevents that impurity from piling up and blockking up a sieve section of thick bamboo to can improve edulcoration separator's edulcoration efficiency, wear-resisting structure can also improve helical blade's life, reduces the number of times of tearing open the machine and changing the blade, thereby sparingly maintain the cost.

Description

Spiral rotating mechanism and garbage impurity removal and separation device

Technical Field

The utility model relates to a refuse handling installation technical field particularly, relates to a spiral slewing mechanism and rubbish edulcoration separator.

Background

The kitchen waste is rich in organic matter content, contains a large amount of biomass energy and has high recycling value. When the kitchen waste is recycled, the kitchen waste is required to be added into a screen of an impurity removal separation device for impurity removal separation, solid-phase particles with large specific gravity are thrown onto a settling wall and deposited on the inner wall of the screen under the action of a strong centrifugal force field generated by high-speed rotation of a helical blade, sinking slag is pushed to one end of the screen continuously under the pushing of the helical blade and is discharged from a slag outlet, and separated filtrate is discharged from the screen, so that solid-phase particle impurities in the kitchen waste can be separated from organic matters in a liquid phase, and raw materials are provided for a subsequent oil extraction process.

However, solid phase particles are usually mixed with fine sand, fibers and other impurities, and are easily bonded and accumulated on the inner wall of a screen of the impurity removal separation device, and a helical blade of the existing impurity removal separation device is difficult to separate the solid phase particles from the screen, so that the screen is easily blocked, the impurity removal separation efficiency is very influenced, the helical blade is easily abraded, and the blade needs to be frequently dismounted and replaced, so that the maintenance cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem how to improve edulcoration separator's edulcoration efficiency, reduce the dimension and protect the cost.

In order to solve the problem, the utility model provides a spiral slewing mechanism for the setting is in screening mechanism, including pivot and helical blade, the pivot is used for running through along the axial a sieve section of thick bamboo of screening mechanism, helical blade sets up along the axial in the pivot and be located in the sieve section of thick bamboo, helical blade includes blade body and wear-resisting structure, the blade body with the pivot is connected, wear-resisting structure sets up the blade body is kept away from the one end of pivot is used for the separation to bond and is in impurity on the sieve section of thick bamboo inner wall.

Optionally, the wear-resistant structure comprises a wear-resistant block, and the wear-resistant block is detachably connected with one end of the blade body away from the rotating shaft and is used for separating impurities adhered to the inner wall of the screen drum.

Optionally, the wear-resisting structure further includes a mounting column, a mounting groove is formed in a side end face, away from the rotating shaft, of the blade body, the mounting column is used for being detachably connected with the mounting groove, and the wear-resisting block is connected with a portion, located outside the mounting groove, of the mounting column.

Optionally, in the thickness direction of blade body, the interval of at least one department between the relative both sides inner wall of mounting groove is greater than the notch width of mounting groove, the erection column with the mounting groove phase-match.

Optionally, the wear-resisting structures are provided in a plurality, and in the length direction of the rotating shaft, the wear-resisting structures are arranged on the blade body at intervals.

Optionally, helical blade is equipped with a plurality ofly, and is a plurality of helical blade follows the circumference interval setting of pivot, in the length direction of pivot, adjacent helical blade is last wear-resisting structure dislocation set.

Compared with the prior art, the utility model, following beneficial effect has:

through setting up spiral slewing mechanism in screening mechanism, spiral slewing mechanism's a pivot runs through the sieve section of thick bamboo of screening mechanism along the axial, helical blade's blade body is connected with the pivot, helical blade's wear-resisting structure sets up the one end of keeping away from the pivot at the blade body, and be used for separating the impurity that bonds on sieve section of thick bamboo inner wall, spiral slewing mechanism during operation, the pivot can drive helical blade and rotate, the last wear-resisting structure of helical blade can scrape the impurity that bonds on sieve section of thick bamboo inner wall, smash it and drop from sieve section of thick bamboo inner wall, then rethread blade body with its one end spiral propelling movement to the sieve section of thick bamboo outside the sieve section of thick bamboo of discharging, can prevent that impurity from piling up and blockking up sieve section of thick bamboo, thereby can improve edulcoration separator's edulcoration efficiency, simultaneously, it can improve helical blade's life to set up wear-resisting structure to keep away from at the one end of blade body, reduce the number of machine change blade, thereby save the maintenance cost, when carrying out maintenance, only need to change wear-resisting structure and need not to change whole blade, can further reduce the maintenance cost.

In order to solve the problem, the utility model also provides a rubbish edulcoration separator, include as above spiral slewing mechanism.

Optionally, this rubbish edulcoration separator still includes screening mechanism, screening mechanism includes last screen cloth, lower screen cloth and staple bolt, go up the screen cloth with lower screen cloth is connected and is formed a sieve section of thick bamboo, the staple bolt sets up on the outer wall of a sieve section of thick bamboo and be used for pressing from both sides tightly a sieve section of thick bamboo.

Optionally, the sieve section of thick bamboo includes a first sieve section of thick bamboo and a second sieve section of thick bamboo, a first sieve section of thick bamboo is grid net section of thick bamboo, a second sieve section of thick bamboo is round hole net section of thick bamboo, a first sieve section of thick bamboo with a second sieve section of thick bamboo is followed the length direction of a sieve section of thick bamboo is connected.

Optionally, this rubbish edulcoration separator still includes feeding flange and feeding case, the feeding case be used for through the feeding flange with the inside intercommunication of a sieve section of thick bamboo, the feeding flange with all be equipped with waist type hole on the feeding case, it is a plurality of waist type hole sets up along circumference interval, the feeding case with the feeding flange passes through waist type jogged joint.

Compared with the prior art, the trash impurity removal and separation device and the spiral rotating mechanism have the same advantages, and are not described in detail herein.

Drawings

Fig. 1 is a schematic structural view of a spiral rotating mechanism in an embodiment of the present invention;

fig. 2 is an enlarged view of a portion a in fig. 1 according to an embodiment of the present invention;

fig. 3 is a schematic structural view of another view angle of the spiral rotating mechanism in the embodiment of the present invention;

FIG. 4 is a schematic structural view of an embodiment of the trash impurity removal and separation device of the present invention;

FIG. 5 is a schematic structural view of another view angle of the trash separating device according to the embodiment of the present invention;

fig. 6 is a schematic structural view of a sieving mechanism in an embodiment of the present invention;

fig. 7 is a schematic structural view of another view angle of the sieving mechanism in the embodiment of the present invention;

fig. 8 is a schematic structural view of a feeding flange in an embodiment of the present invention.

Description of reference numerals:

1. a rotating shaft; 2. a helical blade; 21. a blade body; 211. mounting grooves; 22. a wear resistant structure; 221. a wear-resistant block; 222. mounting a column; 100. a screening mechanism; 101. feeding a screen mesh; 102. a lower screen mesh; 103. hooping; 200. a feed flange; 300. a frame; 400. a motor; 500. a discharging mechanism; 600. and (5) cleaning the tube.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it is to be understood that the forward direction of "X" in the drawings represents the left direction, and correspondingly, the reverse direction of "X" represents the right direction; the forward direction of "Y" represents forward, and correspondingly, the reverse direction of "Y" represents rearward; the forward direction of "Z" represents the upward direction, and correspondingly, the reverse direction of "Z" represents the downward direction, and the terms "X", "Y", "Z", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings of the specification, and are merely for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. The terms "first" and "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiment of the utility model provides a spiral slewing mechanism for the setting is in screening mechanism 100, including pivot 1 and helical blade 2, pivot 1 is used for running through the sieve section of thick bamboo of screening mechanism 100 along the axial, and helical blade 2 sets up in pivot 1 and is located a sieve section of thick bamboo along the axial, and helical blade 2 includes blade body 21 and wear-resisting structure 22, and blade body 21 is connected with pivot 1, and wear-resisting structure 22 sets up the one end of keeping away from pivot 1 at blade body 21, and is used for the separation to bond the impurity on sieve section of thick bamboo inner wall.

As shown in fig. 1, fig. 3, fig. 4 and fig. 5, the helical blade 2 may be directly disposed on the outer wall of the rotating shaft 1 by welding, riveting or bolting, or may be connected to the outer wall of the rotating shaft 1 by a connecting rod, the wear-resistant structure 22 may be fixed on the blade body 21 by welding, riveting or bolting using a block, strip or plate-shaped wear-resistant material, or may be reinforced by a build-up welding process at an edge of one side of the blade body 21 away from the rotating shaft 1 to form the wear-resistant structure 22.

For example, the wear-resistant material may be a metal wear-resistant material such as wear-resistant steel or wear-resistant cast iron, or may also be a non-metal wear-resistant material such as cast stone, alumina ceramic, silicon carbide ceramic, or zirconia ceramic, which may be specifically selected according to the needs, and is not limited herein.

In this embodiment, in order to reduce the resistance when spiral slewing mechanism rotates, adopt the connecting rod to be connected between helical blade 2 and the pivot 1, as shown in fig. 3, every connecting rod all sets up along the radial of pivot 1, its one end is connected with helical blade 2, the other end is connected with pivot 1, the connecting rod is equipped with a plurality ofly, the length direction interval setting of pivot 1 is followed to a plurality of connecting rods, make to form a plurality of fretworks between helical blade 2 and the pivot 1, make things convenient for impurity to pass from it, thereby can reduce spiral slewing mechanism's rotation resistance, improve edulcoration efficiency.

It should be noted that the wear-resistant structure 22 is disposed at one end of the blade body 21 away from the rotating shaft 1, and is used for separating impurities adhered to the inner wall of the screen cylinder, and when the spiral rotating mechanism is disposed in the screening mechanism 100, a certain distance needs to be kept between the wear-resistant structure 22 and the inner wall of the screen cylinder, so as to prevent the wear-resistant structure 22 from scraping the inner wall of the screen cylinder when the spiral rotating mechanism rotates.

As shown in fig. 3 and 4, the axial direction of the rotating shaft 1 is the X-axis direction.

Like this, through setting up spiral slewing mechanism in screening mechanism 100, spiral slewing mechanism's pivot 1 runs through the sieve section of thick bamboo of screening mechanism 100 along the axial, helical blade 2's blade body 21 is connected with pivot 1, helical blade 2's wear-resisting structure 22 sets up the one end of keeping away from pivot 1 at blade body 21, and be used for separating the impurity that bonds on sieve section of thick bamboo inner wall, spiral slewing mechanism during operation, pivot 1 can drive helical blade 2 and rotate, wear-resisting structure 22 on helical blade 2 can scrape the impurity that bonds on sieve section of thick bamboo inner wall, smash and drop from sieve section of thick bamboo inner wall with it, then rethread blade body 21 with its one end spiral propelling movement to sieve section of thick bamboo outside discharging, can prevent that impurity from piling up and blockking up the sieve section of thick bamboo, thereby can improve edulcoration separating device's edulcoration efficiency, and simultaneously, it can improve helical blade 2's life to set up wear-resisting structure 22 at blade body 21 one end of keeping away from pivot 1, the number of maintenance is reduced and is quick-witted change the blade, thereby save the maintenance cost, when maintaining, also only need not only change wear-resisting structure 22 and need not change whole blade, can further reduce the maintenance cost.

Optionally, the wear-resistant structure 22 includes a wear-resistant block 221, and the wear-resistant block 221 is detachably connected to an end of the vane body 21 away from the rotating shaft 1 and is used for separating impurities adhered to the inner wall of the screen cylinder.

As shown in fig. 1 and 3, in order to save maintenance cost, the whole helical blade 2 does not need to be replaced during maintenance, in this embodiment, the wear-resistant structure 22 adopts the wear-resistant block 221, and the wear-resistant block 221 and the blade body 21 can be detachably connected through a structure such as a bolt or a slot, which can be specifically selected as required, and is not limited herein.

It should be noted that, because the relative positions of the feeding mechanism and the discharging mechanism 500 of the impurity removing and separating device on the rack 300 are usually fixed and unchangeable, the rotation direction of the spiral rotating mechanism is usually fixed and unchangeable, in order to further improve the impurity removing efficiency, the wear-resistant block 221 can be set to be flush with one side end face of the blade body 21 facing the rotation direction, a step-shaped structure is prevented from being formed between the wear-resistant block 221 and the blade body 21, when the spiral rotating mechanism rotates, impurities can be prevented from being accumulated between the wear-resistant block 221 and the blade body 21, the rotation resistance of the spiral rotating mechanism is reduced, and thus the impurity removing efficiency is improved.

Optionally, the wear-resistant structure 22 further includes a mounting post 222, a side end surface of the blade body 21 away from the rotating shaft 1 is provided with a mounting groove 211, the mounting post 222 is detachably connected to the mounting groove 211, the wear-resistant block 221 is connected to a portion of the mounting post 222 located outside the mounting groove 211, in a thickness direction of the blade body 21, a distance between at least one of the inner walls of two opposite sides of the mounting groove 211 is greater than a width of a notch of the mounting groove 211, and the mounting post 222 is matched with the mounting groove 211.

As shown in fig. 1 and fig. 2, in order to make the wear-resistant structure 22 installed more firmly and prevent the wear-resistant block 221 from rotating relative to the vane body 21 when the spiral rotation mechanism rotates to scrape and grind impurities on the inner wall of the screen cylinder, in this embodiment, an installation groove 211 is provided on one side end surface of the vane body 21 away from the rotating shaft 1, an installation column 222 of the wear-resistant structure 22 is provided in the installation groove 211, and the wear-resistant block 221 and the installation column 222 are connected by a bolt, wherein the installation groove 211 may adopt a groove structure with a cross-sectional shape of T, inverted triangle, saw tooth or various combinations thereof, and is not limited herein.

It should be noted that, when the wear-resistant block 221 is installed on the mounting post 222 through a bolt, one side end surface of the wear-resistant block close to the blade body 21 needs to be abutted against the blade body 21, so that the wear-resistant block can be prevented from rotating relative to the blade body 21 when scraping impurities on the inner wall of the screen cylinder.

It should be noted that, because the blade body 21 is spiral, in order to facilitate the installation of the installation column 222 into the installation groove 211 located at the middle position of the blade body 21, an auxiliary groove may be provided at one side of the installation groove 211 at the corresponding position, the auxiliary groove is provided with an opening on a side end surface of the blade body 21 perpendicular to the thickness direction and a side end surface away from the direction of the rotating shaft 1, so that the installation column 222 may slide into the installation groove 211 from the auxiliary groove, after the installation column 222 slides into the installation groove 211, a stopper may be provided in the auxiliary groove, and the installation column is fixed by bolts, thereby preventing the installation column 222 from sliding out from the installation groove 211.

Optionally, the wear-resistant structure 22 is provided in plural, and the plural wear-resistant structures 22 are arranged on the blade body 21 at intervals in the length direction of the rotating shaft 1.

As shown in fig. 1 and 3, in order to improve the scraping efficiency of the wear-resistant structure 22 and reduce the rotation resistance of the spiral rotation mechanism, in this embodiment, the wear-resistant structure 22 is a block-shaped structure, and a plurality of wear-resistant structures 22 are arranged at intervals along the length direction of the blade body 21.

It should be noted that, in order to further improve the scraping and grinding efficiency, a plurality of salient point structures may be regularly or randomly arranged on the end surface of one side of the wear-resistant block 221 facing the inner wall of the screen cylinder, and exemplarily, the salient point structures may be conical protrusions, and the conical protrusions are distributed in an array.

Optionally, the helical blade 2 is provided with a plurality of helical blades 2, the helical blades 2 are arranged along the circumferential direction of the rotating shaft 1 at intervals, and the wear-resistant structures 22 on the adjacent helical blades 2 are arranged in a staggered manner in the length direction of the rotating shaft 1.

As shown in fig. 1 and fig. 3, in order to make the spiral rotating mechanism operate more stably and improve the processing capacity of the trash impurity removal and separation device, in this embodiment, a plurality of spiral blades 2 may be arranged at intervals along the circumferential direction of the rotating shaft 1, and the wear-resistant structures 22 on adjacent spiral blades 2 are arranged along the length direction of the rotating shaft 1 in a staggered manner, and the number of the spiral blades 2 may be an odd number or an even number, which is not limited herein.

Illustratively, in order to make the screw rotation mechanism have stronger integrity and more firm and reliable, the number of the helical blades 2 can be four, the four helical blades 2 are arranged at equal intervals, the two opposite helical blades 2 share a connecting rod, a through hole penetrating along the radial direction is arranged on the rotating shaft 1, the connecting rod can penetrate through the connecting rod and is connected with the rotating shaft 1, and the two opposite helical blades 2 are respectively fixed at two opposite ends of the connecting rod.

Another embodiment of the utility model provides a rubbish edulcoration separator, including foretell spiral slewing mechanism.

As shown in fig. 5, fig. 6 and fig. 7, screening mechanism 100 is disposed on frame 300, frame 300 includes a frame body and a casing, the casing is disposed on frame 300, screening mechanism 100 is disposed in the casing, a left bearing seat and a right bearing seat are further disposed on both sides of the casing on frame 300, a left end portion of a rotating shaft 1 of a spiral rotating mechanism penetrates through a left end cover of a screen drum of screening mechanism 100 and then is rotatably connected with the left bearing seat, a right end portion of the rotating shaft 1 penetrates through a right end cover of the screen drum and then is rotatably connected with the right bearing seat, sealing processing is performed between the rotating shaft 1 and the left end cover of the screen drum, the right end cover of the screen drum and the casing, and a liquid accumulation box is further disposed at a corresponding position outside the casing to prevent packing oil from leaking and causing pollution.

A driving motor 400 is arranged on one side of the left bearing seat on the rack 300, the driving motor 400 is in driving connection with the left end part of the rotating shaft 1 through a coupler, so that a rotating blade of the spiral rotating mechanism is driven to rotate in the screen drum, a discharging mechanism 500 is further arranged between the right bearing seat and the casing on the rack 300, and the discharging mechanism 500 is communicated with the inside of the screen drum.

In order to conveniently maintain the structures such as the screening mechanism 100 and the spiral rotating mechanism in the casing, the casing adopts a flip structure and comprises an open casing fixedly connected with the frame 300 and a flip hinged with the casing through a hinge, the flip is locked with the casing through a bolt, and a cleaning pipe 600 is further arranged on one side of the screening drum in the casing, so that the structures such as the screening drum in the casing can be cleaned conveniently.

Optionally, this rubbish edulcoration separator still includes screening mechanism 100, and screening mechanism 100 includes screen cloth 101, screen cloth 102 and staple bolt 103 down, and last screen cloth 101 is connected with screen cloth 102 down and is formed a sieve section of thick bamboo, and staple bolt 103 sets up on the outer wall of sieve section of thick bamboo and is used for pressing from both sides tight sieve section of thick bamboo, and a sieve section of thick bamboo includes first sieve section of thick bamboo and second sieve section of thick bamboo, and first sieve section of thick bamboo is a grid net section of thick bamboo, and a second sieve section of thick bamboo is a round hole net section of thick bamboo, and first sieve section of thick bamboo is connected along the length direction of sieve section of thick bamboo with second sieve section of thick bamboo.

As shown in fig. 5, 6 and 7, in order to facilitate the cleaning treatment of the inner wall of the screen cylinder, in this embodiment, the screen cylinder is of a structure formed by connecting an upper screen 101 and a lower screen 102, in order to increase the strength of the screen, the upper screen 101 and the lower screen 102 are prevented from being separated in the work process, and meanwhile, the inner wall of the screen cylinder is convenient to detach when being cleaned, the outer wall of the screen cylinder is further provided with hoops 103 for fastening, and a plurality of hoops 103 are arranged at intervals along the length direction of the screen cylinder.

In addition, in order to make the impurity separation effect better, whole sieve section of thick bamboo adopts the multistage formula structure that is formed by connecting a first sieve section of thick bamboo and a second sieve section of thick bamboo, a first sieve section of thick bamboo sets up the one end and adopts the grid screen cloth of being close to feed mechanism, can increase the hoop frictional resistance of material, make it reduce annular removal, can remove and discharge towards the one end of being close to discharge mechanism 500 fast along the grid direction, a second sieve section of thick bamboo sets up the one end and adopts the round hole screen cloth of being close to discharge mechanism 500, the size of round hole can be adjusted as required, do not restrict here.

Optionally, the trash impurity removal and separation device further comprises a feeding flange 200 and a feeding box (not shown), the feeding box is used for being communicated with the inside of the screen drum through the feeding flange 200, waist-shaped holes are formed in the feeding flange 200 and the feeding box, the waist-shaped holes are circumferentially arranged at intervals, and the feeding box is connected with the feeding flange 200 through the waist-shaped holes.

As shown in fig. 4, fig. 5 and fig. 8, in this embodiment, the feeding mechanism includes a feeding cylinder and a feeding box, the feeding cylinder is disposed on the frame 300 and is communicated with the inside of the screen cylinder, one end of the feeding cylinder, which is far away from the casing, is provided with a feeding flange 200, the feeding box is provided with a connecting flange, the feeding flange 200 has a same caliber as the connecting flange, and is provided with a plurality of waist-shaped holes arranged along the circumferential direction at intervals, the feeding box and the feeding flange 200 pass through the waist-shaped holes through bolts to be connected, the direction of the feeding port on the feeding box can be adjusted by adjusting the position of the bolts on the waist-shaped holes, and the feeding mechanism is adaptable to different installation environments and convenient to install.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to fall within the scope of the present disclosure.

Claims (10)

1. The utility model provides a spiral slewing mechanism for set up in screening mechanism (100), its characterized in that, including pivot (1) and helical blade (2), pivot (1) is used for following the axial and runs through the sieve section of thick bamboo of screening mechanism (100), helical blade (2) set up along the axial on pivot (1) and lie in the sieve section of thick bamboo, helical blade (2) include blade body (21) and wear-resisting structure (22), blade body (21) with pivot (1) is connected, wear-resisting structure (22) set up blade body (21) are kept away from the one end of pivot (1) for the separation bonds impurity on the sieve section of thick bamboo inner wall.

2. Screw rotation mechanism according to claim 1, characterized in that the wear resistant structure (22) comprises a wear resistant block (221), the wear resistant block (221) being removably connected to the end of the vane body (21) remote from the rotation shaft (1) and serving to separate impurities adhering to the inner wall of the screen cylinder.

3. The screw rotating mechanism according to claim 2, wherein the wear-resistant structure (22) further comprises a mounting column (222), a mounting groove (211) is formed in an end surface of the blade body (21) on a side away from the rotating shaft (1), the mounting column (222) is used for being detachably connected with the mounting groove (211), and the wear-resistant block (221) is connected with a portion of the mounting column (222) located outside the mounting groove (211).

4. The screw rotation mechanism according to claim 3, wherein in the thickness direction of the blade body (21), at least one distance between two opposite side inner walls of the installation groove (211) is larger than the width of the notch of the installation groove (211), and the installation column (222) is matched with the installation groove (211).

5. Screw rotation mechanism according to any one of claims 1 to 4, wherein the wear resistant structure (22) is provided in plurality, and the wear resistant structures (22) are provided on the blade body (21) at intervals in the length direction of the rotation shaft (1).

6. The screw rotating mechanism according to claim 5, wherein a plurality of screw blades (2) are provided, the plurality of screw blades (2) are arranged at intervals along the circumferential direction of the rotating shaft (1), and the wear-resistant structures (22) on the adjacent screw blades (2) are arranged in a staggered manner in the length direction of the rotating shaft (1).

7. A trash impurity removal and separation device, characterized by comprising a spiral rotating mechanism according to any one of claims 1 to 6.

8. A trash impurity removal and separation device according to claim 7, further comprising a screening mechanism (100), wherein the screening mechanism (100) comprises an upper screen (101), a lower screen (102) and a hoop (103), the upper screen (101) and the lower screen (102) are connected to form a screen cylinder, and the hoop (103) is arranged on the outer wall of the screen cylinder and used for clamping the screen cylinder.

9. A trash impurity removal and separation device according to claim 8, wherein the screen drum comprises a first screen drum and a second screen drum, the first screen drum is a grid screen drum, the second screen drum is a round hole screen drum, and the first screen drum and the second screen drum are connected in the length direction of the screen drum.

10. A trash impurity removal and separation device according to claim 8 or 9, further comprising a feeding flange (200) and a feeding box, wherein the feeding box is used for being communicated with the inside of the screen drum through the feeding flange (200), waist-shaped holes are formed in the feeding flange (200) and the feeding box, a plurality of waist-shaped holes are arranged at intervals in the circumferential direction, and the feeding box is connected with the feeding flange (200) through the waist-shaped holes.

Images